El Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires es una Unidad Ejecutora (UE) de triple dependencia UNCPBA-CONICET-CICPBA, creada a mediados de 2013 sobre la base de actividades científicas y tecnológicas existentes en la UNCPBA en los campos disciplinares de Física, Química e Ingeniería.
Líneas de Investigación del CIFICEN:
- Física e Ingeniería de materiales
- Física medica
- Física, química, fisicoquímica y medio ambiente
- Fluidos y plasmas
- Mecatrónica e ingeniería de procesos
- Óptica y fotofísica
(2017) Cortese, C. M.; Portela, G.; Sánchez, R. J.; Fernández, María Belén
The effect of the combined hydrothermal-microwave (HT-MW) pretreatment operating conditions on the oil extraction yield by cold pressing was evaluated, as well as its canolol and tocopherols content.
Entire and broken canola seeds were subjected to hydrothermal pretreatment at different temperatures (110°C and 130°C), then they were irradiated in a microwave oven until reaching a moisture content of 6.5% (dry basis), that it is a safe storage moisture and it is adequate for the pressing process. Entire seeds exposed at a HT temperature of 130°C and microwaved for 2.98 min exhibited the best canola oil expression yield (34.9%, d.b) and the highest amount of canolol (533 μg/g oil), maintaining the total tocopherol content invariant with respect to oil from samples subjected to the other pretreatment operating conditions and from untreated seeds. However, individual tocopherol isomers presented different contents when varying pretreatment conditions, showing a differential extraction due to the factors analysed (seeds granulometry/breakage and HT temperature).
At the optimum conditions quality as means of acidity, peroxide index and p-Anisidine value were determined. Acidity index slightly increased due to the pretreatment and peroxide index significantly diminished, being both value below the limits preestablished by the Alimentarius Codex. Meanwhile, p-Anisidine value notably increased, slightly affecting TOTOX value.